Image Resizer
Resize images to specific dimensions or percentages.
Drop or select an image to resize it. Choose exact dimensions or scale by percentage. The resized image processes right in your browser—no upload to any server.
Drop files here or click to select
Select a file
🔒 Runs entirely in your browser. No file uploads.
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What is Image Resizer?
Image Resizer is a free online tool that changes image dimensions to your specifications. Set width and height in pixels, or scale by percentage while maintaining aspect ratio.
When Should You Use This Tool?
Use this tool when you need to resize photos for social media, create thumbnails, fit images into specific dimensions for websites, or reduce image file size.
How to Use Image Resizer
- 1Drop your image or click to select a file.
- 2Choose resize mode: by dimensions (pixels) or percentage.
- 3Enter your desired width and height, or percentage scale.
- 4Toggle "Maintain aspect ratio" if needed.
- 5Download the resized image.
How Does This Tool Work?
This tool uses the HTML5 Canvas API to resize images locally in your browser. The original image is drawn onto a canvas at the new dimensions, preserving quality.
Privacy Note: Runs entirely in your browser. Your data never leaves your device. No file uploads to any server.
Common Use Cases
Social Media Managers
Resize images to platform-specific dimensions.
Web Developers
Create thumbnails and optimize image sizes.
Photographers
Prepare images for different display sizes.